#include <chrono>#include <iostream>#include <map>#include <mutex>#include <string>#include <thread>std::map<std::string,std::string>g_pages;std::mutexg_pages_mutex;voidsave_page(conststd::string&url){// simulat
若已占有 mutex 的线程调用 try_lock,则行为未定义。 若此操作返回 true,则同一互斥体上的先前 unlock() 操作同步于(定义于 std::memory_order)它。注意若此操作返回 false,则先前的 lock() 不与之同步。 参数(无) 返回值若成功取得锁则为 true,否则为 false。 异常...
std::mutex:: std::mutex::native_handle From cppreference.com <cpp |thread |mutex Returns the underlying implementation-defined native handle object. Parameters (none) Return value Implementation-defined native handle object. Exceptions
shared_lock(mutex_type&m,std::adopt_lock_tt); (6)(since C++14) template<classRep,classPeriod> shared_lock(mutex_type&m, conststd::chrono::duration<Rep,Period>&timeout_duration); (7)(since C++14) template<classClock,classDuration> ...
#include <iostream>#include <string>#include <thread>#include <mutex>#include <condition_variable>std::mutexm;std::condition_variablecv;std::stringdata;boolready=false;boolprocessed=false;voidworker_thread(){// Ждёт, пока main() отправитданныеstd::unique_locklk(m...
External Links−Non-ANSI/ISO Libraries−Index−std Symbol Index C reference C89,C95,C99,C11,C17,C23│Compiler supportC99,C23 Language Basic concepts Keywords Preprocessor Expressions Declaration Initialization Functions Statements Headers Type support ...
std::swap(std::unique_lock) Especialización destd::swapparaunique_lock (plantilla de función) Ejemplo Ejecuta este código #include <mutex>#include <thread>#include <chrono>structCaja{explicitCaja(intnum):num_cosas{num}{}intnum_cosas;std::mutexm;};voidtransferir(Caja&de, Caja&a,intnum...
{std::apply([](auto&... __m) { (__m.unlock(), ...); }, _M_devices); } Run Code Online (Sandbox Code Playgroud) mutex1 lockedmutex2 try lockedmutex3 try locked1:0mutex1 unlockedmutex2 unlockedmutex3 unlocked Run Code Online (Sandbox Code Playgroud) ...
(std::chrono::seconds(1));std::unique_lock<std::mutex>lock(m);std::cout<<"producing "<<i<<'\n';produced_nums.push(i);notified=true;cond_var.notify_one();}done=true;notified=true;cond_var.notify_one();});std::threadconsumer([&](){std::unique_lock<std::mutex>lock(m);while...
g++编译选项:-std=c++11。包含头文件: #include <thread>:C++多线程库 #include <mutex>:C++互斥量库 #include <future>:C++异步库 线程的创建 以普通函数作为线程入口函数: void entry_1() { } void entry_2(int val) { } std::thread my_thread_1(entry_1); std::thread my_thread_2(entry_2,...